Cannot read property 'reduce' of undefined

[Jakub T. Jankiewicz]

Just got this error when using a custom font in NodeJS. Even the example 'Ghost' font doesn't work. And preloadFonts use fetch so it's for browser only.

I have code like this:

const { promisify } = require('util');
const figlet = require('figlet');
const render = promisify(figlet.text);

const config = {
    font: 'Colossal',
    width: 80,
    whitespaceBreak: true
};

module.exports = async () => {
    const text = 'Jakub T. Jankiewicz';
    return {
        wrap: await render(text, {...config, width: 12}),
        big: await  render(text, config)
    };
};

The issue with probably with line wrapping.

[Jakub T. Jankiewicz]

I've found the error in the code. I've tried to reproduce it, to first write unit tests, but it seems that it works fine. I have no idea why it w throwing an error in first place.

[Minsoo]

I faced the same issue.
I examined the code, then found a few things.

1. In generateFigTextLines, nextFigChars.chars becomes undefined; It is because of breakWord.
2. When nextFigChars.chars is undefined, joinFigArray throws an Error.

The first thing is a more significant problem.
The code looks like this:

function breakWord(figChars, len, opts) {
        var result = {};
        for (var i = figChars.length; --i;) {
            var w = joinFigArray(figChars.slice(0, i), len, opts);
            if (figLinesWidth(w) <= opts.width) {
                result.outputFigText = w;
                if (i < figChars.length) {
                    result.chars = figChars.slice(i);
                } else {
                    result.chars = [];
                }
                break;
            }
        }
        return result;
    }

The return value, result, is sometimes not fully initialized.